When I first tried one of these sound detectors, the red light stayed on continuously. Apparently, it was too sensitive. I want to use it where noises are very loud, noises that go over 80db, often up to 100db. After reading directions, I soldered a 2.2K resister into the R17 slot, after which the red light wouldn’t light up until it detects a very loud, sharp noise. Now I will have to de-solder the 2.2K resister, and replace it with a larger resistance. But I think I will use a variable resistor in its place.
BTW, its quite difficult catching the detector’s waveforms on an oscilloscope, and they don’t quite match the waveforms illustrated in the hookup directions.

SPARKFUN
?Description: OpenLog is an open source data logger. Simple to use, simple to change. We wanted to create a serial logger that just worked. Power this device up and it will start logging any received serial data at 9600bps?
Datasheet (GITHUB)
?OpenLog is a simple serial logger based on the ATmega328 running at 16MHz. The ATmega328 should be able to talk to high capacity (larger than 2GB) SD cards. The whole purpose of this logger was to create a logger that just powered up and worked. OpenLog ships with a standard serial bootloader so you can load new firmware with a simple serial connection.?

I can?t get the darn thing to operate. I?m rather incompetent at some of this stuff . However, not just because of my incompetence, but also judging by the previous comments about the device, OpenLog is not as simple to get operating as stated.
PO?T

SPARKFUN
?Description: OpenLog is an open source data logger. Simple to use, simple to change. We wanted to create a serial logger that just worked. Power this device up and it will start logging any received serial data at 9600bps?
Datasheet (GITHUB)
?OpenLog is a simple serial logger based on the ATmega328 running at 16MHz. The ATmega328 should be able to talk to high capacity (larger than 2GB) SD cards. The whole purpose of this logger was to create a logger that just powered up and worked. OpenLog ships with a standard serial bootloader so you can load new firmware with a simple serial connection.?

I can?t get the darn thing to operate. I?m rather incompetent at some of this stuff . However, not just because of my incompetence, but also judging by the previous comments about the device, OpenLog is not as simple to get operating as stated.
PO?T

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